virtual stream interface

[oliver-zehentleitner]

As discussed here it would be nice to add the feature of a virtual stream interface.

The reason is, that binance allows a max length of 8004 chars in the websocket URL. So if the coder creates a stream with a longer URL, the API should splitt the URLto chunks smaller than 8004 chars and create as much streams as needed. This streams should still be managed like one normal multiplex stream through the virtual_interface, so the coder does not have to care or to be aware of this.

[oliver-zehentleitner]

Binance added subscribe/unsubscribe to their websockets, so the 8004 char limit in the URI can be solved with subscribtions: https://github.com/binance-exchange/binance-official-api-docs/blob/master/web-socket-streams.md#live-subscribingunsubscribing-to-streams

I am working on it right now (version 1.9.1.dev).

[oliver-zehentleitner]

With 1.10.0 I added subscription via websocket.send() so the URI limit is not a problem anymore!

Read for further information: #38